C#;Grafika komputerowa;Krzywe B-Składane;April2018

GrafikaKomputerowaKrzyweB-Skladane.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

//best data set: 0,0  30,50 40,80 100,40

namespace GK_05_Krzywe
{
    public partial class Form1 : Form
    {

        private System.Drawing.Graphics g;
        private System.Drawing.Pen penBlue = new System.Drawing.Pen(Color.Blue, 2);
        private System.Drawing.Pen penRed = new System.Drawing.Pen(Color.Red, 2);

        private System.Drawing.Pen pen1 = new System.Drawing.Pen(Color.Black, 1);
        private System.Drawing.Pen pen2 = new System.Drawing.Pen(Color.Red, 1);
        private System.Drawing.Pen pen3 = new System.Drawing.Pen(Color.Blue, 1);
        private System.Drawing.Brush br1 = new System.Drawing.SolidBrush(Color.Blue);
        public Form1()
        {
            InitializeComponent();
            g = pictureBox1.CreateGraphics();

        }


       
        private void button1_Click(object sender, EventArgs e)
        {
            int numberOfPoints = 1000;
            int midX = pictureBox1.Width / 2, midY = pictureBox1.Height / 2, maxX = pictureBox1.Width, maxY = pictureBox1.Height;
            Bitmap bmp = new Bitmap(pictureBox1.Width, pictureBox1.Height);
            Graphics gr = Graphics.FromImage(bmp);

            PointF P1 = new PointF((float)Double.Parse(textBox1.Text), (float)Double.Parse(textBox2.Text));
            PointF P2 = new PointF((float)Double.Parse(textBox3.Text), (float)Double.Parse(textBox4.Text)); //vector
            PointF P3 = new PointF((float)Double.Parse(textBox5.Text), (float)Double.Parse(textBox6.Text)); //vettor
            PointF P4 = new PointF((float)Double.Parse(textBox7.Text), (float)Double.Parse(textBox8.Text));
            gr.DrawLine(pen3, midX + P1.X, midY - P1.Y, midX + P2.X + P1.X, midY - P2.Y - P1.Y);
            gr.DrawLine(pen3, midX + P4.X, midY - P4.Y, midX + P3.X + P4.X, midY - P3.Y - P4.Y);

            double t = 0;
            PointF[] drawingPoints = new PointF[numberOfPoints];
            for (int i = 0; i < numberOfPoints; i++)
            {
                drawingPoints[i].X = midX + (float)((2 * Math.Pow(t, 3) - 3 * Math.Pow(t, 2) + 1) * P1.X + (-2 * Math.Pow(t, 3) + 3 * Math.Pow(t, 2)) * P4.X + (Math.Pow(t, 3) - 2 * Math.Pow(t, 2) + t) * P2.X + (Math.Pow(t, 3) - Math.Pow(t, 2)) * P3.X);
                drawingPoints[i].Y = midY - (float)((2 * Math.Pow(t, 3) - 3 * Math.Pow(t, 2) + 1) * P1.Y + (-2 * Math.Pow(t, 3) + 3 * Math.Pow(t, 2)) * P4.Y + (Math.Pow(t, 3) - 2 * Math.Pow(t, 2) + t) * P2.Y + (Math.Pow(t, 3) - Math.Pow(t, 2)) * P3.Y);
                t += 1.0 / numberOfPoints;
            }

            gr.FillEllipse(br1, midX + P1.X - 2, midY - P1.Y - 2, 4, 4);
            gr.FillEllipse(br1, midX + P4.X - 2, midY - P4.Y - 2, 4, 4);
            gr.DrawLines(pen2, drawingPoints);

            gr.DrawLine(pen1, 0, midY, maxX, midY);
            gr.DrawLine(pen1, midX, 0, midX, maxY);
            pictureBox1.Image = bmp;
        
        }


        private void button2_Click(object sender, EventArgs e)
        {
            
            int numberOfPoints = 1000;
            int midX = pictureBox1.Width / 2, midY = pictureBox1.Height / 2, maxX = pictureBox1.Width, maxY = pictureBox1.Height;
            Bitmap bmp = new Bitmap(pictureBox1.Width, pictureBox1.Height);
            Graphics gr = Graphics.FromImage(bmp);

            PointF P1 = new PointF((float)Double.Parse(textBox1.Text), (float)Double.Parse(textBox2.Text));
            PointF P2 = new PointF((float)Double.Parse(textBox3.Text), (float)Double.Parse(textBox4.Text));
            PointF P3 = new PointF((float)Double.Parse(textBox5.Text), (float)Double.Parse(textBox6.Text));
            PointF P4 = new PointF((float)Double.Parse(textBox7.Text), (float)Double.Parse(textBox8.Text));

            double t = 0;
            PointF[] drawingPoints = new PointF[numberOfPoints];
            for (int i = 0; i < numberOfPoints; i++)
            {
                drawingPoints[i].X = midX + (float)(Math.Pow((1 - t), 3) * P1.X + 3 * t * (Math.Pow((1 - t), 2)) * P2.X + 3 * Math.Pow(t, 2) * (1 - t) * P3.X + Math.Pow(t, 3) * P4.X);
                drawingPoints[i].Y = midY - (float)(Math.Pow((1 - t), 3) * P1.Y + 3 * t * (Math.Pow((1 - t), 2)) * P2.Y + 3 * Math.Pow(t, 2) * (1 - t) * P3.Y + Math.Pow(t, 3) * P4.Y);
                t += 1.0 / numberOfPoints;
            }

            gr.FillEllipse(br1, midX + P1.X - 2, midY - P1.Y - 2, 4, 4);
            gr.FillEllipse(br1, midX + P2.X - 2, midY - P2.Y - 2, 4, 4);
            gr.FillEllipse(br1, midX + P3.X - 2, midY - P3.Y - 2, 4, 4);
            gr.FillEllipse(br1, midX + P4.X - 2, midY - P4.Y - 2, 4, 4);
            gr.DrawLines(pen2, drawingPoints);

            gr.DrawLine(pen1, 0, midY, maxX, midY);
            gr.DrawLine(pen1, midX, 0, midX, maxY);
            pictureBox1.Image = bmp;
        
        }

        //hermiet
        private void button3_Click(object sender, EventArgs e)
        {

            int numberOfPoints = 1000;
            int midX = pictureBox1.Width / 2, midY = pictureBox1.Height / 2, maxX = pictureBox1.Width, maxY = pictureBox1.Height;
            Bitmap bmp = new Bitmap(pictureBox1.Width, pictureBox1.Height);
            Graphics gr = Graphics.FromImage(bmp);
            PointF[] p = new PointF[8];
            p[0] = new PointF((float)Double.Parse(textBox1.Text), (float)Double.Parse(textBox2.Text));
            p[1] = new PointF((float)Double.Parse(textBox3.Text), (float)Double.Parse(textBox4.Text));
            p[2] = new PointF((float)Double.Parse(textBox5.Text), (float)Double.Parse(textBox6.Text));
            p[3] = new PointF((float)Double.Parse(textBox7.Text), (float)Double.Parse(textBox8.Text));

            p[4].X = 80;
            p[4].Y = -20;
            p[5].X = 100;
            p[5].Y = 20;
            p[6].X = 120;
            p[6].Y = -20;
            p[7].X = 140;
            p[7].Y = 20;

            PointF[][] points;
            points = new PointF[5][];
            for (int i = 0; i < 5; i++)points[i] = new PointF[numberOfPoints];

            gr.DrawLine(pen1, 0, midY, maxX, midY);
            gr.DrawLine(pen1, midX, 0, midX, maxY);

            double t = 0;
            for (int j = 3; j < 8; j++)
            {
                t = 0;
                for (int i = 0; i < numberOfPoints; i++)
                {
                    points[j - 3][i].X = midX + (float)(Math.Pow((1 - t), 3) / 6 * p[j - 3].X + (3 * Math.Pow(t, 3) - 6 * Math.Pow(t, 2) + 4) / 6 * p[j - 2].X + (-3 * Math.Pow(t, 3) + 3 * Math.Pow(t, 2) + 3 * t + 1) / 6 * p[j - 1].X + Math.Pow(t, 3) / 6 * p[j].X);
                    points[j - 3][i].Y = midY - (float)(Math.Pow((1 - t), 3) / 6 * p[j - 3].Y + (3 * Math.Pow(t, 3) - 6 * Math.Pow(t, 2) + 4) / 6 * p[j - 2].Y + (-3 * Math.Pow(t, 3) + 3 * Math.Pow(t, 2) + 3 * t + 1) / 6 * p[j - 1].Y + Math.Pow(t, 3) / 6 * p[j].Y);

                    t += 1.0 / numberOfPoints;
                }
            }

            for (int i = 0; i < 5; i++)gr.DrawLines(pen2, points[i]);
         
            for (int i = 0; i < 8; i++)gr.FillEllipse(br1, midX + p[i].X - 3, midY - p[i].Y - 3, 6, 6);

            pictureBox1.Image = bmp;
        }
    }
}